Monitoring - Hitachi Relion 670 Series Product Manual

Line differential protection RED670
Version 2.2
value OUTLIMIT is set to 1 to indicate the output value is
limited.
Absolute value ABS
The absolute value (ABS) function gives the absolute value
of the input.
Polar to rectangular converter POL_REC
The polar to rectangular converter (POL_REC) function
gives the possibility to convert an input values in polar form
to a rectangular form.
Radians to degree angle converter RAD_DEG
The radians to degree angle converter (RAD_DEG) function
gives the possibility to convert an input value from radian
angles to degree angles.
Definable constant for logic function CONST_REAL
The definable constant for logic function (CONST_REAL)
can be used to provide a constant output in an real format
based on the set value in PST.
Analog input selctor for real values REALSEL
Analog input selector for real values (REALSEL) function
selects one out of eight possible real inputs. Each input
(INPUTx) has its dedicated select input (SELx).
The function provides the output for the value of the
selected input and its respective select number (INSEL). If
more than one input is selected, the output will be the
lowest in order INPUT value. If inputs are not selected, the
select value number shall be 0.
Store value for integer inputs STOREINT
The store value for integer inputs (STOREINT) function can
be used to store the integer value upon the trigger, the
minimum trigger duration for it to be stored is 100ms. The
stored value is reset to 0 when the RESET input is set to 1.
Store value for real inputs STOREREAL
The store value for real inputs (STOREREAL) function can
be used to store the real value upon the trigger, the
minimum trigger duration for it to be stored is 100ms. The
stored value is reset to 0 when the RESET input is set to 1.
Degree to radians angle converter DEG_RAD
The degree to radians angle converter (DEG_RAD) function
gives the possibility to convert an input value from degree
angles to radian angles.

16. Monitoring

Measurements CVMMXN, CMMXU, VNMMXU,
VMMXU, CMSQI, VMSQI
The measurement functions are used to get on-line
information from the IED. These service values make it
possible to display on-line information on the local HMI and
on the substation automation system about:
54
GUID-A5BF20EF-F04B-4546-B6D0-C1343A56ED72 v1
GUID-C2265D29-5169-4E04-B706-15B8A42F1D3E v1
GUID-40A32941-6633-4ABE-B123-9CCAAACC093A v1
GUID-3B03B1AD-54AF-4FC7-9472-4295D920BA4A v1
GUID-CDE0D96C-B328-4B10-A88C-1648D1E9A521 v1
GUID-48902D3D-BE8B-4159-B8A2-A596912BAE76 v1
GUID-A3DF152A-7BAA-4BBE-BBB8-12F513C92317 v1
GUID-51608C56-7ED9-4FAD-A5BF-5EA4991F83D2 v1
M12024-3 v9
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• measured voltages, currents, frequency, active, reactive
and apparent power and power factor
• measured analog values from merging units
• primary phasors
• positive, negative and zero sequence currents and
voltages
• mA, input currents
• pulse counters
Supervision of mA input signals
The main purpose of the function is to measure and process
signals from different measuring transducers. Many devices
used in process control represent various parameters such
as frequency, temperature and DC battery voltage as low
current values, usually in the range 4-20 mA or 0-20 mA.
Alarm limits can be set and used as triggers, e.g. to
generate trip or alarm signals.
The function requires that the IED is equipped with the mA
input module.
Disturbance report DRPRDRE
Complete and reliable information about disturbances in the
primary and/or in the secondary system together with
continuous event-logging is accomplished by the
disturbance report functionality.
Disturbance report (DRPRDRE), always included in the IED,
acquires sampled data of all selected analog input and
binary signals connected to the function block with a
maximum of 40 analog and 352 binary signals.
The Disturbance report functionality is a common name for
several functions:
• Event list
• Indications
• Event recorder
• Trip value recorder
• Disturbance recorder
• Fault locator
• Settings information
The Disturbance report function is characterized by great
flexibility regarding configuration, starting conditions,
recording times, and large storage capacity.
A disturbance is defined as an activation of an input to the
AnRADR or BnRBDR function blocks, which are set to
trigger the disturbance recorder. All connected signals from
start of pre-fault time to the end of post-fault time will be
included in the recording. Disturbance record will have
visible settings from all function instances that are
configured in the application configuration tool.
Every disturbance report recording is saved in the IED in
the standard COMTRADE format. In the COMTRADE1999
format it is saved as a header file HDR, a configuration file
1MRK 505 379-BEN R
M16054-3 v2
M12153-3 v15
Hitachi Energy